I want to make all the text (headers, paragraphs, etc) in my site larger. I created a style.css and played with changed the p, h1, and body tags but changes don’t show up. Do I have the style sheet attached incorrectly? Any tips about the responsive nature of fonts. I see you have the body set for px and em. Not sure if there is a magic formula for changing these two numbers. Thanks!

CSS is based on 2 concepts specificity and cascade. a naked h1 tag has little specificity and chances are (100%) that after your h1 tags , the theme’s original h1 tag definitions will come later in the cascade and will override your h1 tags since in a child theme they will be the very first css processed in the cascade.